title: Surgical closure of patent ductus arteriosus in preterm infants at neonatal intensive care unit.
mesh_terms: D004374:Ductus Arteriosus, Patent / Q000601:surgery*; D006801:Humans; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000601:surgery*; D007363:Intensive Care Units, Neonatal; D012189:Retrospective Studies; D016896:Treatment Outcome